Combined trochleoplasty and MPFL reconstruction for treatment of chronic patellofemoral instability: a prospective minimum 2-year follow-up study

Abstract

Prospective case series, Level IV.

Surgical treatment of patellofemoral instability using trochleoplasty or MPFL reconstruction: a systematic review

“…This is underlined by a recent work from Nelitz et al [20] in which both trochleoplasty and MPFL reconstruction were performed on 26 knees with excellent results. Similar results were found in a work from Banke et al [1] on 18 knees with minimum follow-up of 2 years. The importance of the correct indication for trochleoplasty and/or MPFL reconstruction cannot be overestimated.…”

Femoral Trochleoplasty for Recurrent Patellar Dislocation: Treating the Underlying Trochlear Dysplasia

“…According to Banke et al [3], an improvement in all scores (International Knee Documentation Committee [IKDC], Lysholm Knee Scoring Scale, and Knee Injury and Osteoarthritis Outcome Score [KOOS]) is observed after treatment for chronic patellofemoral instability with sulcus-deepening trochleoplasty combined with MPFL reconstruction. McNamara et al [14] described 83% of satisfaction in patients submitted to a combined procedure of trochleoplasty and MPFL reconstruction.…”

“…Static stabilizers (bone and cartilage), passive stabilizers (ligaments and articular capsule), and finally active stabilizers (muscles and tendons) all interact to provide patellofemoral stability [1-3]. Four important factors for instability and anterior knee pain are trochlear dysplasia, quadriceps dysplasia, patella alta, and a distance between the tibial tuberosity and the trochlear groove (TT-TG) > 20 mm.…”

“…Dejour and Saggin [4] classified it into 4 types with higher degrees of dysplasia correlating with early patellar dislocation/subluxation [5]. In trochlear dysplasia, the patella cannot engage properly and tends to track laterally in knee extension or early flexion [3]. …”

Patellofemoral Joint Instability: A Review of Current Concepts

“…The presence of trochlear dysplasia can be addressed with a trochlear groove deepening trochleoplasty procedure, as described by Dejour (Lyon's procedure) [66], or its variants which led to good clinical outcomes in the literature [41,67,68,69,70,71,72]. Long-term studies on the effectiveness of trochleoplasty are scarce.…”